VoIP can save a lot of money and offer advanced calling features in phone equipment. Here's how to use it on Linux.

Steps

1

Choose a Linux-compatible VoIP handset or headset (or you could just use a microphone). Some have Bluetooth or WiFi. Many features including keypads simply will not work (so you will use the one on-screen).

2

Choose a provider from Google Talk[1], SIPphone or Skype (pay credit or a subscription to call landlines or mobiles). For PC to PC calls you may not need one.